Extra Large Mode Area Fibers

Nufern is expanding its broad range of active triple clad fibers with Extra Large Mode Area (XLMA) fibers using Heraeus’ proprietary process for making large core doped glass. The XLMA ytterbium doped fibers provide end users with high absorption and large core areas for multi-kW, multimode lasers and high pulse energy amplifiers. These fibers are also extremely well suited for making amplified spontaneous emission (ASE) sources with low spatial and temporal coherence which makes them ideal sources for full-field imaging and ranging applications. The fibers are offered with a triple clad geometry enabling multi-kW average powers and multi-MW peak powers.

This new class of XLMA fibers is expected to expand the frontiers of fiber lasers, amplifiers and ASE sources in materials processing, imaging and ranging applications.

A thin filament of drawn or extruded glass or plastic having a central core and a cladding of lower index material to promote total internal reflection (TIR). It may be used singly to transmit pulsed optical signals (communications fiber) or in bundles to transmit light or images.

A laser in which the lasing medium is an optical fiber doped with low levels of rare-earth halides to make it capable of amplifying light. Output is tunable over a broad range and can be broadband. Laser diodes can be used for pumping because of the fiber laser's low threshold power, eliminating the need for cooling.

Founded in March 2000, Nufern is a leading U.S. manufacturer of specialty optical fibers, fiber lasers and amplifiers serving diverse markets. With manufacturing facilities located at its headquarters in East Granby, Connecticut, USA. Nufern has the...